Gemstone



FIG. 1 is a top plan view of my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational side view thereof, the rear elevationalview being identical;

FIG. 4 is a left side view thereof, the right side view being identical;

FIG. 5 is a perspective view thereof; and,

FIG. 6 is another perspective view thereof.

CLAIM The ornamental design for a gemstone, as shown and described.